Column-forming machine.



3 SHEETS-SHEET 1.

H. c. DRUMM.

COLUMN FORMING MACHINE.

' APPLICATION FILED JAN. 26, 1914 1 1,794. Patented Nov. 2, 1915.

' @Inventoz Herbert 6i flmzmm/w H. C. DRUMM.

COLUMN FORMING MACHINE.

APPLICATION FILED JAN. 26. 19m.

Patented Nov. 2, 1915.

3 SHEETS-SHEET 2.

avwemtoz Herbert 62 um,

Wanna H. C. DRUMM.

COLUMN FORMING MACHINE.

APPLICATION FILED JAN. 26. 1914. 1,1539%.

I avweutoz Harm 6, mm .1 a,

Patented Nov. 2, 1915.

3 SHEETS-SHEET 3 shown.

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HERBERT C. DRUMM, OFCANTON, OHIO, ASSIGNOR TO THE UNION METAL MANUFAC- TURING COMPANY, OF CANTON, OHIO, A CORPORATION OF OHIO.

COLUMN-FORMING MACHINE.

Specification of Letters Patent.

Application filed January 26, 1914-. Serial No. 814,331.

' of Ohio, have invented certain new and useful Improvements in Column-Forming Machines, of which the following is a specification.

My present invention relates to improvements in column forming machines, in which a traveling, shaping and forming roll is employed and operated in conjunction with suitable shaping and forming devices.

The objects of the present invention are, first, to provide a machine by which a column or shaft can be produced, said column or shaft when produced being of the entasis type, and second, to so arrange the parts with reference to each other to so form the flutes, ridges or corrugations whereby-the proper longitudinal curvature of the column as well as the longitudinal curvature of the flutes, ridges or corrugations will be formed and to give to the finished column the proper and desired entasis curvature. These objects, together with other objects readily apparent to those skilled in the art are attained fiby the construction illustrated in the accompanying drawings, although my invention may be embodied in a variety of other mechanical forms, the construction illustrated being chosen by way of example.

In the accompanying drawingsFigure 1 is a perspective view showing the different parts properly arranged with reference to each other. Fig. 2 is a side elevation showing the column or' shaft in dotted lines, also showing the position of the machine before any action is taken upon the columns or shaft. Fig. 3 is a side elevation showing the working parts of the machine in diiferent position from the position shown in Fig. l, and the form of the column or shaft after being acted upon. Fig. 4 is a transverse vertical section on line 3-3, Fig. 2 with the exception of the collar or shaft 1 is not Fig. 5 is a transverse vertical section on line 4-4, Fig. 3. Fig. 6 is a transverse section on line 66, Fig. 3. Fig. 7 is a diagrammatic view of the die-bar showing in dotted lines-the movement of the forming rolls whereby the entasis curvature or formation is given.

Similar numerals of reference indicate corresponding parts in all the figures of the drawings.

In the accompanyin drawings, 1 represents the main head, which is supported by Patented Nov. 2, 11915.

suitable standards 2 which rest upon any suitable foundation. To the top or upper end of the head 1 are securely attached in any eonvenlent and well known manner the tiebars 3, which tie-bars are formed of a length somewhat greater than the length of the shaft or column designed to be operated upon, which operation is hereinafter described. The opposite ends of the tie-bars 3 are connected to the standard 4 in any convenient and well known, manner, said tiebars serving the purpose of connecting the head 1 together with its standards 2 and the standard 4, said parts being so attached and connected that a rigid structure or frame is provided.

To the head 1 is securely attached in any convenient and well known manner, one end of the supporting beam or bar 5; the opposite end being supported by means of some suitable detachable device such as a jack 6, but 1t will be understood that any suitable device adapted to support the beam 5 may be employed.

The object and purpose of providing a removable device for supporting the end of the bar 5 is to provide for removing the support, and bring it out of the way when it is desired to place or remove a column or shaft before being acted upon and to remove the same after the column or shaft has been acted upon as hereinafter described, the operation being of such a nature that an ordinary straight column or shaft is formed into what is known as an entasis column or shaft, or in other words the machine is designed to produce an entasis column.

Upon the bar 5 is located the channel bar 7, which channel bar is for the purpose of receiving and holding in proper position the die bars 8 and 9. In the drawings three die bars 8 and 9 are illustrated, but the number of sections going to make up a complete die bar is immaterial and in fact a single die bar formed of suflicient length and of the desired curvature may be employed. The only advantage in forming the die bar proper in sections is, first, the convenience and ease in changing the die bar'proper, and second, to

At one end of the machine proper is located the sprocket wheel 10,-which sprocket wheel is securely mounted upon the shaft 11 or its equivalent and 'upon which shaft is mounted the pinion 12, said pinion being driven by the gear wheel 13 mounted upon the shaft 14, one end of said shaft being properly journaled in the'standard 15 or its equivalent. Upon the shaft 14 are properly located the open and closed belt pulleys 16 and 17, which belt pulleys are alternately, rotatably coupled and uncoupled by a suitable clutch 18, which 'is operated by the clutch shifting rod 20 and intermediate parts such as the bell crank 01' lever 20 and the shift bar 20". The particular parts just above mentioned are common in machines where a reciprocating action is required as in planers and like machines, and the devices do not within themselves form any specific part of the present invention, but some mechanical device for shifting the reciprocating parts 'mustnecessarily be employed, and the parts are here shown in a conven tional manner.

Around the sprocket wheel 10 is located the conveyer chain 21, which conveyer chain is extended around the sprocket wheel 22, which sprocket wheel is simply for the purpose of supporting the conveyer chain 21 and maintaining said chain in proper relationship as the chain is moved in opposite directions by the sprocket wheel 10.. To the conveyer chain 21 is attached the upward extending plate or head 23, said head or plate extendlng up between the tie bars or channel bars 3.

Below the channel bars or tie bars 3 is located the downward extending carriage or head 24, which carriage is provided with the anti-friction rollers 25, which anti-friction rollers. are so located that they will come in contact with the bottom or under edges of the track portions 26 of the channel or tiebars 3. The track portions '26 may be curved, but when curved the curvature should be of a different degree from the curvature of the die-bars 8 and 9. The .dif-

ferent degreesv of curvature as between the tracks 26 and the die bars 8 and 9 being for the purpose ofincreasing or decreasing the pressure of the roll 27, which roll is journaled in and carried by the pivoted arm 28, said aim being pivoted to: the carriage 24:.

It will be understood that when heavy pressure is brought u on a given flute, rib' or corrugation of the column, such rib, flute or corrugation will be pressed'or formed of" greater depth or height, by. which action the longitudinal curvature of the shaft or column will be varied, thereby producing a column of the entasis'type and which differentiates said column or shaft from an ordinary, straight corrugated pipe-or a-tapered ended pipe in which there is no curvapipe or in the tapered portion.

a ,In order to limit the upward movement of the roll 27 andat the samertime to provide adjustment for said upper movement the pivoted arm 28 is provided with the screw die bars or more specifically the column or shaft, and in order to provide for this vertical movement of the carriage which is 'comparatively slight, the plate or head 23 is extended upward and provided with the antifriction rollers 30' and when the carriage or head proper is moved upward, said anti-friction rollers are carried with it, which will elevate the anti-friction rollers, but when the head or carriage proper is lowered or suspended, said anti-friction rollers will travel back and forth upon the inward extended flanges 31. The arrangement being such that regardless of thevdifl'erentiated curvature as between the diebars 8 and 9 and the curvature of the tracks or ways, the roll 27 will move together with the head in ture, elther 1n the straight portion of the a vertical direction, either up or down. This ated upon by the machine to whichthe present invention pertains. I

In Fig. 5 a shaft or column is shown in cross section which may be formed upon a,- suitable mandrel such as commonly used,"

and afterward formed into an entasis column or shaft, the finished column or, shaft being shown in cross section in Fig. 6.

The track bars 26 are preferably formed separate from .the tie-bars 3 and when formed separate they are attached to said tie-bars by suitable screws 32, said screws being so adjusted that their heads or ends Will not extend below the surface of the tracks 26 so as to interfere with the rollers 25 and at the same time Will not interfere with the movement of the anti-friction rollers 30.

In order to automatically shift the direction of the roll carriage the shifting rod 20 is provided With-the strike blocks 33, which strike blocks are arranged to..be actuated by the strike flange 34 upon the roll carriage proper, but the mechanism designed to automatically shift the direction of travel of the carriage does not have any specific reference to the present invention, but I have illustrated the most simple and usual construction.

Having fully described my invention what I claim as new and desire to secure by Letters Patent, is

1. In a machine of the class described, a

frame, a shaft supporting bar carried by said frame, a channel bar carried by said supporting bar, die-bars located in the channel bar, said die-bars curved intermediate their ends, the curvature adapted to longitudinally curve the shaft or column and t0 longitudinally curve the flutes and a pressure roll.

2. In a machine for forming entasis shafts, the combination of'a frame, means for supporting the shafts, a die-bar held in fixed relative position upon the shaft supporting means, the forming edge of said die bar curved and means for forming and curving flutes in the body of the column or shaft.

3. In a machine for forming entasis shafts, the combination of a suitable frame, a shaft supporting bar, a die-bar carried bysaid shaft supporting bar, means for holding said die-bar in fixed relative position with reference to the supporting bar, a pressure roll and means for moving said roll in a curved path.

4. In a machine of the class described, the combination of a suitable frame, a column supporting bar, a die-bar and track bar, said die-bar and track bar having differentiated curved edges, a carriage provided with a pressure roll and means for moving said carriage and pressure roll between the die bar and track bars.

5. In a machine for forming entasis shafts, the combination of a suitable frame, a shaft supporting bar, a die-bar carried by sa d shaft supporting bar, means for holding said die-bar in fixed relative position with reference to the supporting bar, a pressure roll and means for moving said roll to and from the die-bar. v

In testimony that I claim the above, I have hereunto subscribed my name in the presence of two witnesses.

HERBERT G. DRUMM.

Witnesses:

SYLVIA BoRoN, F. W. BOND. 

